the AGI should be off the 2019 return as originally filed. if your agi was $xxxx. 50 (50 cents or more) round up to the next whole $.
you can also see if the IRS has a transcript of your 2019 return.
https://www.irs.gov/individuals/get-transcript
you didn't say when you filled 2019 so it could be that your's is one of many '19 returns that have not yet been processed or if you filed after 10/15/2020 using Zero for AGI was correct. for the pin make sure you're not entering it as last year's pin - you didn't e-file last year s you don't have a prior year pin.
if none of this works you'll have to mail in your return.
